package com.example.share.config;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

//拦截器
public class LoginHanderInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //登录成功后，有用户的session
        Object loginUser = request.getSession().getAttribute("loginUser");

        if (loginUser==null){
//            request.setAttribute("msg","请先登录");
            request.getRequestDispatcher("/index.html").forward(request,response);
            return false;
        }else {
            return true;
        }
    }
}
